“There isn’t a minute that goes by that we don’t think of her and think of the wonderful life she could have lived,” Mark wrote to VeloNews. “There isn’t a second in which we wouldn’t freely give our lives in exchange for hers. The hurt is unbelievable.”
U.S. Olympic cyclist Kelly Catlin
U.S. Olympic cyclist Kelly Catlin
Bronze medalist Kelly Caitlin of the US listens to her national anthem during the podium ceremony for the Women's individual pursuit on day four of the 2017 Track Cycling World Championships in Hong Kong on April 15, 2017. / AFP PHOTO / Anthony WALLACE (Photo credit should read ANTHONY WALLACE/AFP/Getty Images)
Jennifer Valente, Kimberly Geist, Kelly Caitlin and Emma White of USA during the Women's Team Pursuit first round during day one of the Tissot UCI Track Cycling World Cup at Lee Valley VeloPark, London. (Photo by Paul Harding/PA Images via Getty Images)
Gold medalist Chloe Dygert (C) of the US celebrates on the podium with silver medalist Australia's Ashlee Ankudinoff (L) and her compatriot and bronze medalist Kelly Caitlin during the victory ceremony for the Women's individual pursuit on day four of the 2017 Track Cycling World Championships in Hong Kong on April 15, 2017. / AFP PHOTO / Anthony WALLACE (Photo credit should read ANTHONY WALLACE/AFP/Getty Images)
Cycling - UCI Track World Championships - Women's Individual Pursuit, Final - Hong Kong, China – 15/4/17 - Australia's Ashlee Ankudinoff, Chloe Dygert and Kelly Catlin of the U.S. celebrate with medals. REUTERS/Bobby Yip
2016 Rio Olympics - Cycling Track - Victory Ceremony - Women's Team Pursuit Victory Ceremony - Rio Olympic Velodrome - Rio de Janeiro, Brazil - 13/08/2016.Sarah Hammer (USA) of USA, Kelly Catlin (USA) of USA, Chloe Dygert (USA) of USA and Jennifer Valente (USA) of USA on podium with the silver medals. REUTERS/Matthew Childs FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS.
Jul 22, 2015; Toronto, Ontario, CAN; Jasmin Glaesser of Canada, Catlin Kelly of the United States and Evelyn Garcia of El Salvador on the medal podium fro the women's cycling individual time trail finals during the 2015 Pan Am Games at Milton Time Trial Course. Mandatory Credit: Eric Bolte-USA TODAY Sports
Jul 22, 2015; Toronto, Ontario, CAN; Catlin Kelly of the United States competes in the women's cycling individual time trail finals during the 2015 Pan Am Games at Milton Time Trial Course. Mandatory Credit: Eric Bolte-USA TODAY Sports
(L-R) Silver medallist Netherlands' Annemiek van Vleuten, gold medallist US Chloe Dygert and bronze medallist US Kelly Catlin pose on the podium after taking part in the women's individual pursuit final during the UCI Track Cycling World Championships in Apeldoorn on March 3, 2018. (Photo by Foto Olimpik/NurPhoto via Getty Images)
HONG KONG, HONG KONG - APRIL 13: The team of USA with Kelly Catlin, Chloe Dygert, Kimberly Geist and Jennifer Valente celebrates winning the Women's Team Pursuit Finals during 2017 UCI World Cycling on April 13, 2017 in Hong Kong, Hong Kong. (Photo by Power Sport Images/Getty Images)
LONDON, ENGLAND - MARCH 04: Kelly Catlin (L), Chloe Dygert (2nd L), Sarah Hammer (2nd R) and Jennifer Valente (R) of USA celebrate after winning the Women's Team Pursuit Final during Day Three of the UCI Track Cycling World Championships at Lee Valley Velopark Velodrome on March 4, 2016 in London, England. (Photo by Dan Mullan/Getty Images)
TORONTO, ON - JULY 17: (L-R) Jennifer Valente, Ruth Winder, Sarah Hammer and Kelly Catlin of the United States of America pose with their silver medals in the women's team pursuit cycling track during the 2015 Pan Am Games at the Cisco Milton Pan Am Velodrome on July 17, 2015 in Toronto, Canada. (Photo by Harry How/Getty Images)
US Kelly Catlin, US Chloe Dygert, US Sarah Hammer and US Jennifer Valente celebrate after taking gold in the Women's Team Pursuit final during the 2016 Track Cycling World Championships at the Lee Valley VeloPark in London on March 4, 2016 / AFP / Eric FEFERBERG (Photo credit should read ERIC FEFERBERG/AFP/Getty Images)
LONDON, ENGLAND - MARCH 04: Sarah Hammer (L), Jennifer Valente (2nd L), Chloe Dygert (2nd R) and Kelly Catlin (R) of USA celebrate their gold medal after winning the Women's Team Pursuit Final during Day Three of the UCI Track Cycling World Championships at Lee Valley Velopark Velodrome on March 4, 2016 in London, England. (Photo by Dan Mullan/Getty Images)
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The Minneapolis-area native also raced on the road for the Rally UHC Pro Cycling Team and was pursuing a graduate degree in computational mathematics at Stanford, according to the Associated Press.
“The U.S. cycling community suffered a devastating loss with the passing of Kelly Catlin,” USA cycling president Rob DeMartini said in a statement. “Kelly was more than an athlete to us, and she will always be part of the USA Cycling family.
“The entire cycling community is mourning this immense loss. We are offering continuous support to Kelly's teammates, coaches and staff.We also encourage all those who knew Kelly to support each other through the grieving.
“We are deeply saddened by Kelly's passing, and we will all miss her dearly. We hope everyone seeks the support they need through the hard days ahead, and please keep the Catlin family in your thoughts.”